XDCAM - 1080p/1080i

Bit confused...
Editing something on XDCAM which was shot at 1080p29.97fps. I'm mobile at the moment so I am cutting from a laptop and am using the DVCPROHD codec due my speed constraints.

I imported it into Media 100 as DVCPROHD and have been editing it in a 1080p29.97fps timeline.

When I export it to a by-reference clip and select "get info" on it. It tells me that the codec is DVCPROHD but 1080i60. Or if I open an XML into Media 100 the sequence settings also tell me it is 1080i.